Wavelet packet analysis on blasting vibration signal under different cutting method

It is conducive to reducedamage of blasting vibration to realize energy distribution and attenuation lawof single-hole blasting vibration signal. With the measured single-holeblasting vibration velocity curves, used wavelet packet analysis technologywith high-resolution character, the law of energy distribution of single-holeblasting vibration signals in different frequency bands, and the effect ofblasting source and distance from the source on single-hole blasting vibrationsignal energy distribution were analysised. The results show that the energy ofsingle-hole blasting vibration signals attenuation very quickly in thefrequency domain concentration distribution in 0~100Hz; and distance from thesource has significant influence on energy distribution in the frequencydomain; The energy is mainly distributed in the low frequency band whendistance from the source is larger, which has guiding significance inmitigation of blast-induced vibrations.

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Research on Blasting Vibration Signal Denoising Based on Lifting Scheme

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.713-715.647 ◽

2015 ◽

Vol 713-715 ◽

pp. 647-650 ◽

Cited By ~ 1

Author(s):

Quan Min Xie ◽

Huai Zhi Zhang ◽

Ying Gao ◽

Hong An Cao ◽

Sheng Qiang Guo ◽

...

Keyword(s):

Wavelet Packet ◽

Mechanical Vibration ◽

Lifting Scheme ◽

Vibration Signal ◽

Wavelet Packet Transform ◽

Signal Denoising ◽

Blasting Vibration ◽

Lifting Wavelet

Considering lifting scheme and traditional wavelet packet transform principle, The optimal lifting wavelet packet threshold denoising algorithm was introduced. Experimental blasting vibration signal was decomposed by optimal lifting wavelet packet, and noise components in blasting vibration measured signals were filtered successfully. Research shows that, lifting wavelet package transform can effectively remove noise components, and it laid an important foundation for lifting algorithm will be introduced into the analysis field of blasting vibration effects and other mechanical vibration signal.

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Fault degradation assessment of water hydraulic motor by impulse vibration signal with Wavelet Packet Analysis and Kolmogorov–Smirnov Test

Mechanical Systems and Signal Processing ◽

10.1016/j.ymssp.2008.01.009 ◽

2008 ◽

Vol 22 (7) ◽

pp. 1670-1684 ◽

Cited By ~ 28

Author(s):

H.X. Chen ◽

Patrick S.K. Chua ◽

G.H. Lim

Keyword(s):

Wavelet Packet ◽

Vibration Signal ◽

Hydraulic Motor ◽

Wavelet Packet Analysis ◽

Kolmogorov Smirnov ◽

Water Hydraulic ◽

Smirnov Test

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Cutting Institutions Running State Estimation Strategy Based on Wavelet Packet Analysis Technology

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.574.696 ◽

2014 ◽

Vol 574 ◽

pp. 696-701

Author(s):

Fu Zhong Wang ◽

Xiao Ying Tian

Keyword(s):

Control Strategy ◽

Wavelet Packet ◽

Vibration Signal ◽

Frequency Characteristics ◽

Wavelet Packet Analysis ◽

Cutting Mechanism ◽

Estimation Strategy ◽

Working Face ◽

Signal Characteristics ◽

Mine Roadway

During robotic heading machine working, it often encounters the coal seam hardness changing tremendously. So the cutting mechanism will be easy to break down. For this problem, put forward a strategy, which using wavelet packet technology to study the vibration signal of cutting mechanism. Filtered the signal with wavelet packet; extracted vibration signal characteristics; established the energy eigenvector; used the Hilbert technology to extract frequency characteristics. According to the energy eigenvector and the frequency characteristics, estimated the cutting mechanism running status. The simulation in MATLAB proves that the control strategy can estimate the running state of cutting mechanism real-time, and lay an important foundation for the realization of coal mine roadway drivage unmanned working face.

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